Hi, I have had way too many requests for this information, so I am sending links for those that are interested in Costa Rica bird books and guides. For this time, I have not found anyone who works with photography, that I can afford. One group charged the price of a good lens, just for one person, so for this first trip I am just going to find some recommended sites, from someone who goes there pretty often.
The most recommended book was published in 2007http://www.amazon.com/Guide-Birds-Costa-Rica-Comstock/dp/0801496004/ref=pd_sim_b_6, (just cut and paste it)
this guide seemed to be the best, and they would take just a couple if we wanted, but we decided to save the money for our first trip.http://www.costaricagateway.com/Kevin Easley was recommended by a number of people on Tweets, where the others were only mentioned by one or two people.
This is a couple from Washington state, but their cost was actually pretty high http://www.birdingonabudgetcr.com.
This guy seems like someone that would be better to contact, looked like a more flexible schedule, altho I don't know the prices.http://birdingcraft.com/wordpress/)-
One guide group, that might find a way to help photographers, if you can afford the price www.greenmacawtours.com

Vicki Biltz
Bonney Lake, Wa
vickibiltz at msn.com
http://www.sawwhetsnew.blogspot.com/
http://www.flickr.com/photos/saw-whets_new/